There is an interesting, and much more scholarly, article on the Royal Society of Chemistry site.
Much more recently, I came across an intriguing story while on a open-top bus tour of Chicago; it was claimed that the cause of food safety owes a debt to none other than Al Capone! The story goes that a member of his family became ill after drinking milk that was past its best, and he used his power and influence in Chicago to enforce the use of 'sell-by' dates. I have seen this story, and variants of it, in a number of places, but I haven't been able to verify it. I do hope it's true, though.